Here are two figures of merit that you could use to compare the cost of electricity generated from solar or wind turbines:

As it is stated in the U.S. Department of Energy 2020 green energy vision, the cost per Watt should be a dollar or equivalently 6 cents per kWh. You can use these figures of merit to compare the cost of solar and wind energy among different countries.

Hope this helps answer your question.

Professor Yehia Khalil

Yale University

USA

Check this REPORT : Cost and Returns of Renewable Energy in

Sub-Saharan Africa: A Comparison of Kenya

and Ghana

http://pdf.usaid.gov/pdf_docs/PA00M2S2.pdf

http://www.cc.lu/fileadmin/user_upload/cc.lu/Manifestations/20150701_Mexico_Colombia_Mission/01___Electric_Power_Generation_in_Colombia_-_2015.pdf